Automobile steering-gear.



S. P. PIERSON.

AUTOMOBILE STEERING GEAR.

APPLICATION FILED AUG. 10, 1911.

1,272,085. Patented July 9,1918.

2 SHEETS-SHEET I flE- l 1i \siii! 14 I INVENOR WITNESSES .P.Piers014 ATTORNEY S. P. PIERSON. AUTOMOBILE STEERING GEAR.

APPLICATION FILED AUG.'I0. m1.

1 ,272,085. Patented July 9, 1918.

2 SHEETS-SHEET 2.

M: v/ a m 2'1 II "WM V-,

L W8 A V fl 1| I Jj I \15 I4 INVENTOR WITNESSES I S.P.Pi1"$01l ATTORN EY STATES swan-r. Hanson, or Minoan, MASSACHUSETTS.

Steering-Gears, of which the following is a specification. g p 1 This invention relates to automobile steering gear, the broad-objectin viewbein'g to. produce a'steering gear which is'irreversible but of a simpler and cheaper characterthan' the ordinary irreversible steering 'gearnow in common use as applied to motor vehicles.

A further object of the, invention is i'to produce steering mechanism of such a char- 1 a'cte r that the ratio of throw- "between the final element of the steering gear and. the initial element thereof, may' be" changed by the manufacturer to suit :theparticular type of vehicle in connection with Y which th steering mechanism is used. a a

i It will be evident as the description pro-- ceeds, that"the steering gear herein shown and described-is capableof various uses for the purpose of steering vehicles or craft .of

' all' kinds', being particularly valuablefor r the knuckle arm' connectin steering" automobiles; aircraft and 'watercraft. T L .3

' WVith the above andotherbbjects in view,

the invention consists in the novel construction, combination and arrangement of parts,

herein, described, illustrated and claimedt In theaccompanying. drawings Y -Figure 1' is a plan view. ofthe improved steering gear, showing the position assumed by the parts when turning to the left.

Fig. 2 is a similar view showing the posi tion of the parts when making'a'right 'hand turn.

Fig. 3 is a vertical sectional view taken about in line with the primary feed screw.

Fig. 4 is a vertical sectional View taken in line with the secondary feed screw.

Referring to the drawings 1 designates the primary element of the steering mechanism, the same being shown as constituting the steering shaft of a motor vehicle and having fast thereon the usual hand controlling wheel 2. 3 designates the finalmember of the improved steering mechanism which is operativelyassociated with rod 4 found upon nearly all motor vehic es of the present day type;

In carrying out the present invention,

I ;iniiroiuonitnsurnnnnvwennn.

v I Specification of Letters I atent. i

Y Applicationfiled August 10,1917. Serial No. -185,538.

- r tes-am.

thesteering shaft 1 hasfast thereon a bevel gear "5 which-meshes with .and .actuates a pinion6 the latter being feathered to what is hereinafter termed a primary feed screW 7 Thefeed screw 7 is formed with a lon-.

gitudinal groove or key-way 8 which re.

ceives a key 9 of'thelbe'vel pinion .6, the con-j struction referred to enabling the-feed screw 7 1to move in the. direction of its, length. For that purpose the primary feed. screw .7 is rotatably. andvslidably mounted ins'uit1 able combined guiding and bearing members.

101 and 11 arranged adjacent to opposite endsof said'primary feed screw. The member :11.is. internally threaded and engages a right handpthread 12 on the adjacent end of the feedv screw 7 The opposite end por-.

tion of the feed screw- 7 is smooth-and unthreaded and merely (rotates within ,and slides through themember 10. The pinion 6 isheld against moving with the feed screw 7 by means of-stops13'.

Mounted in suitable combined guiding and bearing members-14 andv 15. ifsa secondary. feed :sorew 16 {both end portions of which are SH'lOOtll:flHClillIltllIGtLdGd: and freely slidable through the members 14: and '15 'as thronghthespaced arms22 of a secondary runner 33. The last named runner has a -projecting tongue 24: which v,is;=-positi0ned in a s6cket 25 in the connecting rod 4:. Mo-

tion is transmitted from the primary feed screw 7 to thesecondary feed screw 16 by gears 26 and 27 secured to their respective.

screws by fastening means 28. The gears 26 and 27 are of the broad faced type as they have to slide laterally with relation to each other or in planes parallel to the axes of the primary and secondary feed screws which as above indicated are parallel to each other and each of which is movable I in the direction of its length.

From the foregoing description taken in connectlon V with the accompanying drawings,

itv will now-be understood that by turningv the sh aft 1, rotary motion is imparted to the primary feed screw and as the latter has a threaded connection with the guiding and bearing'member 11,'said primary feed screw is caused to! movein the directiQl of its length thereby shifting the primary runner 17 in. t e sa d. irectien- By means o he gears 26 and 27, rotary motion is simultaneously transmitted to the secondary feed screw and as the arm 17 of the primary runner has a threaded engagement with said second ary feed screw, thelatter is caused to move in the direction of its length, and in the same direction as the primary :Eeed screw.

As the secondary runner '33 has a threaded engagement with the secondary feed screw,

it is simultaneouslyshifted in the same di' rec'tion as said secondary feed screw butvat a greater'speed. ltwill be understood that the primary feed screw in moving in onedi rection causes an accelerated movement of the primary runner in the same direction;

The primary runner actuates the secondary feed screw in the same direction at an ac? celerated speed and said secondary feed I do not wish to be limited t othe 'use 0 two feed screws and two runners as a third or fourth or more feedscrews and runners may be'added to the'mec'hanism to still furtheraccelerate the speed of the final member 33 of; the steeringmechan-ism. l'claim z Irreversible steering gear comprising in connection with an initial ctuating"mom-- berand a final actuated member in the form of a runner, a'r'otary and 'long-itudinallymow able'feed screw, a fixed member with'whioh said'scr'ew has a threaded connection, a ro-j tjatable and longitudinally movable secondary feed screw, means for imparting rotary motion from onefeed screw to theother, and

a primary runner having "a threaded connec tion with both feed screws actuated by one ,ciprocatory actuated member consisting of a final runner, a rotary and longitudinally mo ab p i a y feed sc ew gearedtosai initial actuating member, a stationary member with which said primary feed screw has a righthand threaded engagement, rotary and longitudinally movable teed scre means for transmitting rotary motion from one'of said feed :S IQWS t thorqt 9 2 primary runner having a left hand threaded engagement withthe prima y te d crew an a lefth-and threaded engagement, with the final feed scr w; said fina actuated e ement or secondary runner havinga right hand threaded? engagement with sa d final fe d screw; 1- a In steering gear,*the combination of an initial rotary actuatingmember, afinal re ciprocatory 'actuatedmembe Q SiSti g of a nal r nner, a rotaryand longitudinally mo able primary feedscre geared tqsaid initial actuating member, ,a stationary memher with which said primary feed screw has a right hand threadedengagement, a rotary and longitudinally movable final feed screw, means for transmitting rotary motion from one of said feed screws. to the-Other, a primary runner havingw leit hand threaded engagement with the primary feed screw and-a left hand threaded engagement with the final feed screw, said final actuated elementor secondary runner having alright hand threaded engagement with-said final feed-screw, and a steering knuckleiarm air.

tuatin-g rod with 'whichs'aid secondary run nor has a tongue and-socket connection;

, In testimony whereof affix my signature.

'swAN 1?. Hanson.

Cepie s of this lpatent may be obtained for five cents eachyby addressing the Glommisqioner =02 ntents,

1 Y Washington, D. O. f 7 

